calcium fluoride


Gas phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Δfgas-187.50kcal/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
gas,1 bar65.433cal/mol*KReviewChase, 1998Data last reviewed in December, 1968

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 4000. to 6000.
A 13.70880
B 0.171568
C -0.046419
D 0.003957
E -0.136556
F -192.0530
G 81.20480
H -187.5000
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
Δfliquid-283.478kcal/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
liquid,1 bar22.13cal/mol*KReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
Δfsolid-293.000kcal/molReviewChase, 1998Data last reviewed in December, 1968
Quantity Value Units Method Reference Comment
solid16.40cal/mol*KReviewChase, 1998Data last reviewed in December, 1968

Liquid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1691. to 4000.
A 23.88010
B -1.624841×10-9
C 5.607651×10-10
D -6.423311×10-11
E -5.230020×10-10
F -293.9309
G 44.73169
H -283.4771
ReferenceChase, 1998
Comment Data last reviewed in December, 1968

Solid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 298. to 1424.1424. to 1691.
A 21.4828025.82610
B -11.023002.484542
C 15.601800.005489
D -4.269291-0.000684
E -0.272332-0.006699
F -299.9541-307.8850
G 43.5004135.30129
H -293.0000-293.0000
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1968 Data last reviewed in December, 1968

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CaF+12.5 ± 0.8FEIHildenbrand and Murad, 1965 

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Hildenbrand and Murad, 1965
Hildenbrand, D.L.; Murad, E., Dissociation energy of boron monofluoride from mass-spectrometric studies, J. Chem. Phys., 1965, 43, 1400. [all data]


Notes

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